Application of several calculating in data handling of frozen soil direct shear test;

The experiments of soil-water characteristics curves are made under different consolidation pressures for sliding zone soils of Gushubao landslide in the Qingjiang valley,with an advanced unsaturated soil shear instruments which can control suction.

The directly shearing test of soil plays an important role in soil laboratory tests.

Explosion effects and characteristic analysis of frozen soils;

Detection by acoustical method on the physical and mechanical character of frozen soil;

The results indicate that adoption of this direct-embedded foundation where soil-sand is in place of frozen ground can avoid heaving e.

In seasonally frozen ground regions as well as permafrost regions,active layer is the most active terrane in terms of thermodynamics.

In this paper the bearing capacity experiment of pile foundation had been done In the frozen ground region of Qinghai-Tibet Railway.

Dynamic strength of frozen soils;

The factors affecting the resistivity of frozen soils were discussed, and some solutions to grounding for lightning using grounding modules were introduced.

The authors have developed succeedly a kind of 500 kHz 1- 3 composite broadband ultrasonic transducer used for measuring longitudinal wave and transverse wave in frozen soils.